I think that might depend on where this is introduced into the signal path...
In the case of the Hammond circuit I posted above, the incandescent bulbs were fitted as two legs of the 'bridge' fitted across the amplifier output.
So no following gain stages, and no noise from the additional 'variable' resistors that the bulbs essentially were.
I don't think this type of compressor has much application at the mic preamp part of the signal path.?
3 main reasons:
? They need considerable audio power to function
? They're slow, so don't catch transients well.
? The attack and release times are essentially fixed, and are determined by the bulb characteristics?
As Wim has posted above though, they do still have some useful applications...
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On Wed, Apr 13, 2022 at 03:16 PM, Dibutil Ftalat wrote:
Would this technique not introduce a LOT of noise?
On the marketing side of things though it is a treasure chest: one could tune and sell lamps for different pre-sets of compression ratio, attack and release. And then charge extra for the sets of balanced lamps for stereo recording!
